Removable horseshoe-calk.



J. H. WOLF.

REMOVABLE HORSESHOE CALK.

APPLICATION 111:0 MAR. 19. 1914.

1 145 9561 Patented 111111 13, 1915.

a mmmm Inven Attorneys pan snares ra'rnnar amen.

JOHN. H. WOLF, 0E1; MOUNT; HOBEB; WISCONSIN.-

REMOVABLE HORSESHO'E-GALK.

Specification of Letters Patent.

ll fatentedJulyliia 1915.

Applicationvfiled March 19, 19:14. Serial No. 8253380.

To alllwhom it may: concern: 7

Beit: known that .1; .IoHN H... W011 a citizen. ofthe United: States, residingat Mount Horeb in the county, of Dane. and

State. of Wisconsin, have invented anew the provision of? a novel form of call:-

adapted to hold the strip tread, novel means being provided for assembling the calkswith the shoe It is-within thescopeof the invention to improve generally and to-enhancetheutility of, devices of that type to which the present invention appeartains.

With the above and othereobjects in view whichwill appearas the description proceeds, the inventionresidesin the combina-i tion and arrangement of'parts and in the details of construction hereinafter described and claimed, it being understood v that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit oi the invention.

In the accompanying drawing :Figure1' shows in bottom plan, a horseshoe constructed in accordance with the present invention; Fig. 2 is a side elevation of the structure shown in Fig. 1; Fig. 3 is a rear end elevation of the shoe; Fig. 4 is a transverse section taken approximately on the line 44 of Fig. 2; Fig. 5is a side elevation of the calk detached from the shoe, Fig. 6 is a bottom plan of the calk detached from th shoe; Fig. 7 is an end elevation of the detached calk.

In the accompanying drawings, the nu meral 1 indicates a horseshoe of standard construction and provided with the usual nail holes 2. Adjacent the toe of the shoe 1 and adjacent the heel thereof, openings 3 are formed, as shown in Fig. 4, these open ings preferably but not necessarily extending entirely through the shoe.

The invention contemplates the use of one or more toe calks 4 and a pair of heel calks 5. Sihcethe-oalks 4 and 5 are ofidentical construction, butbne of them need-be de scribed tin; L detail. Each.- calk. is. of troughshape and; is: i open at. both ends, the same comprlsing a, top. 6. andi downwardly ex tended, converging.sidewwallsY. A stud 8 upstands frointhe topo of; the calk and preferably. is ottapered or frustdconical construction. There .1 may i be any .numben of these. studs: 8 upon each calk, the openings 3 which. receive: the studs. being decreased or increased accordingly. in number. The openings 3 are originally bored or formed cylindrically, but when the tapered or wedge. shaped studs 8 are. driven. intothe opening s:3,=. the openings will be; distended, 7

as. indicated in Fig. 4, and thus the call: will beqheldiseourely to the shoe .1.

Projecting downwardly from the top 6 ot'the: call; and located between the side walls: 7 are prongs 9. Anynumber of prongs may be. provided upon each calk. The prongs9 are of tapered form and are widesti adjacent the top 6, that is, they are widesti adj acent the place of greatest separation of: the. sidewalls 7. edges, the. side walls? are providedwith inwardly]. extending, approaching, sharpenedvlips 10 which may be formed by battering over theinner edges of'the sidewalls 7. slightly.

In the .present embodimentof the-invention there is employed a continuous strip tread 11 substantially coextensive in lineal extent "with the shoe 1. The tread 11 is flex rope. The tread. 11 is wedged between the side walls 7 and is impaled upon the prongs 9. Because the prongs 9 are widest adjacent the top plate 6, the tread is expanded by the prongs 9 between the downwardly converging side walls 7 of the ealk. By this construction, the tread 11 is held in place, and the hold of the calk upon the tread is further enhanced by the provision of the lips 10 which may extend beneath the tread, or bite into the tread slightly if the tread is of suflicient diameter.

It is to be observed that the calks 4 and 5 are spaced apart. Therefore, the full compressive effort is applied to the tread, between the calks 4 and 5 and thus the grip of the shoe upon the ground is promoted. Further, because the tread 11 is free between the calks 4 and 5, the tread may be flexed laterally so as to uncover one or more of At their lower the nail holes 2. A loose nail, therefore, may be replaced, without removing the entire auxiliary gripping structure, comprising the calks 4 and 5 and the tread 11, from the shoe proper 1.

It is to be observed that any standard form of horseshoe may be adapted for use in the present invention by merely boring or forming otherwise the openings 3 in the shoe. The calks 4 and 5 may be driven to place, the studs 8 being wedged in the openings 3. Although the studs 8 engage wedgewise in the openings 3 with suflicient hold to maintain the calks 4: and 5 on the shoe 1 when the latter is in use, the calks, by the application of a sufficient force may be pried loose from the shoe. The taper given to the studs8 will depend upon the taste of the user and probably the taper has been exaggerated slightly in the drawings, in order that this feature may be made manifest by a mere inspection of'the' drawings.

It is to be observedthat each calk 5 is provided adjacent its rear end with a single tapered studYS, these studs being adapted to be received in the openings 30f the shoe. The tread 11 is assembled with the toe and heel calks, the smaller, upper ends of the studs 8 being seated loosely in the openings Then, the forward ends of the calks 5 maybeshifted transversely of the shoe for a double purpose: first, in order that the intermediate portion of the tread 11 may be so positioned that it will cover the nail holes-2, and secondly, in order that the tread 11 may be positioned close enough to the outer edge of the shoe so that the tread, when desired, may be sprung inwardly to uncover the nail holes 2. After the forward ends of the ealks 5 have thus been adjusted, the calks are driven to place, so that the to the nail holes 2.

Having thus described the invention, what is claimed is A device of the class described comprising a shoe provided upon its sides with nail holes andhaving openings adjacent its heels; a trough-shaped calk assembled with the toe of the shoe; trough-shaped heel calks spaced from the toe calk; and a tread lodged in all of the calks and covering the nail holes, the tread being laterally flexible between the toe and heel calks independently of the toe and heel calks to uncover the nail holes; the heel calks being provided adjacent their rear ends, each, with a single tapered stud which, cooperating initially with one opening in the shoe, permits the forward end of the heel calk to be adjusted transversely of the shoe, thereby adjusting the tread transversely of the shoe, to the end that the tread may at once be positioned to cover the nail holes and be so positioned with respect to the nail holes that the tread may be flexed laterally to uncover the nail holes, the stud being adapted to be finally wedged in the opening in the shoe, thereby to hold the heel calk and the intermediate portions of the tread in adjusted position with respect to the nail holes.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

JOHN H. WOLF.

Witnesses:

TOM BROWN, A. F. GRAMM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

